Adjustable corrosion resistant pipe hanger

ABSTRACT

A pipe hanger having a corrosion resistant strap hung by two eye portions on the arms of a support member, and retained in place by a safety bar. The support member and safety bar are adjustable along a hanger rod to properly locate the strap and the pipe it supports.

United States Patent Inventor John K. Vitus 765 8.51. Ridgeview Terrace,Beuverton, Oreg. 97005 Appl. No. 869,8

Filed Oct. 27, 1969 Patented Sept. 7, 11971 ADJUSTABLE CORROSIONRESISTANT lPlllPlE HANGER 1 Claim, 4 Drawing Figs.

llm.C|l 1Fl6l 3/14 Field of Search 248/59, 60,

[56] References (Cited UNITED STATES PATENTS 840,337 1/1907 Johnson248/60 971,077 9/1910 Roberts 248/59 1,450,640 4/1923 Norman 248/62 X2,744,706 5/1956 Gerdy 248/60 2,835,464 5/1958 Molodin 248/62 PrimaryExaminerChancellor E. Harris Attorney-Buckhorn, Blore, Klarquist andSparkman 11 MET: A pipe hanger having a corrosion resistant strap hungby two eye portions on the arms of a support member, and retained inplace by a safety bar. The support member and safety bar are adjustablealong a hanger rod to properly locate the strap and the pipe itsupports.

PATENTED SEP mu (3.603. 538

JOHN K. VITAS INVENTOR BUCKHORN, BLORE, KLARQUIST & SPARKMAN ATTORNEYSADJUSTABLE CORROSION RESISTANT PIPE HANGER BODY OF THE APPLICATION Thepresent invention relates to a corrosion-resistant hanger for pipes, andparticularly for iron or steel pipes although it also will havesubstantial use for supporting plastic or corrosion resistant pipes. Asis known, metal-to-metal contact must be avoided in many environments,particularly ones that are wet or corrosive. Otherwise galvanic and/orelectrolytic action will occur to damage the hanger and pipes. Incorrosive atmospheres it is also desirable to avoid the use of metalhangers because they will be attacked by the atmosphere.

My hanger meets the above requirements and also provides for verticaladjustment of the strap to facilitate proper support of the piperelative to the ceiling or other overhead structure. My hanger also hasmeans for retaining the strap in place at any position of verticaladjustment thereof.

Two embodiments of my invention are described in the accompanyingdrawings, wherein:

FIG. 1 is a front elevation view of one form of my hanger shownsupporting a metal pipe;

FIG. 2 is a side elevational view of the hanger and pipe;

FIG. 3 is a horizontal sectional view taken along line 3-3 of FIG. 1;

FIG. 41 is a fragmentary side elevational view of a modified form of myinvention.

My hanger comprises a corrosion-resistant strap 11 having a pair of eyes13 which fit on the arms 15 of a lateral support member or hanger bar17. Thus, the arms 15 provide laterally extending eye support portionsfor the eyes 13. The member 17 is formed with a hole to fit on athreaded support rod 19 which is secured at its upper end (not shown) byany conventional means to the ceiling or other overhead structure fromwhich the pipe P is to be hung.

A pair of nuts 21 and 23 located the support member 17 on the rod 19 andfacilitate vertical adjustment of the support member along the rod 19.This enables the strap to be located at the desired position to properlysupport the pipe P.

Each arm 15 terminates in an upwardly projecting spacer lug 27 toprovide clearance for the eyes 13. A safety bar or strip 31 has a holeto fit loosely on the rod 19 with the ends of the bar resting on thelugs 27. The bar is held in such position by a nut 33. In fact, I maydimension the parts such that the bar 31 rests on the nut 33 (or can bedeflected to do so) whereby the nut 33 acts as an additional jamnut.

The bar 31 retains the ears on the support member 17, even though thepipe P and strap 11 bounce quite violently, under the influence of waterhammer in the pipe, or other causes. It is pointed out that the spacerlugs have a height so as to dispose the bar in spaced relation above theeyes 13, so that while the eyes are positively precluded by the safetybar from dislodgement from the hanger bar, the eyes freely hang on thehanger bar and thus may adjust their positions demanded by movements ofthe pipe. This lessens the stresses on the parts that might otherwise becreated.

The bar, however, by virtue of its loose fit on the rod 19 is carried bythe support member 17 when the latter is vertically adjusted.

I find that I can provide a suitable corrosion-resistant strap 11 byproviding fiberglass strands, impregnating them with a suitable liquidplastic, winding the strands directly on a mandrel or mold, and thencuring the impregnated strands.

FIG. 4 shows a modified form of hanger in which the strap 11a ispresumed to have eyes 13d of thin cross section. In such instance, Iprovide a support member 17a having a central boss 35 upon which thesafety bar 31 can rest. I can use only one upper nut 39 instead of two,as in FIG. 1, nut 39 clamping the bar 31 against the support 17a, andthe support member against the nut 21.

lclaim:

1. A corrosion-resistant hanguer comprising: a corrosion-resistant strapavmg an intermediate saddle portion in which a pipe may rest,

said strap having upwardly extending end portions each terminating in aneye,

a transversely extending hanger bar having a central bore to slidablypass a threaded support rod,

a nut to thread on said support rod beneath said hanger bar forsupporting the hanger bar on the rod in a desired position,

said hanger bar having laterally extending eye support portions,

said eyes being loosely received on said support portion of said hangerbar, one on either side of said bore,

a safety bar having a central opening to slidably pass said support rodand be disposed in a position above said hanger bar,

said hanger bar having at each end an upwardly projecting spacer lug,

said safety bar spanning the distance between the central portion ofsaid hanger bar and said lugs and engaging the upper surfaces of saidlugs,

a nut for holding said spacer bar in firm engagement with said lugs,

the height of said lugs being such as to dispose said safety bar inspaced relation above said eyes so that while said eyes are positivelyprecluded from inadvertent dislodgement from said hanger bar, theyfreely hang thereon and thus may adjust their positions as demanded bythe movement of the pipe they support.

1. A corrosion-resistant hanger comprising: a corrosion-resistant straphaving an intermediate saddle portion in which a pipe may rest, saidstrap having upwardly extending end portions each terminating in an eye,a transversely extending hanger bar having a central bore to slidablypass a threaded support rod, a nut to thread on said support rod beneathsaid hanger bar for supporting the hanger bar on the rod in a desiredposition, said hanger bar having laterally extending eye supportportions, said eyes being loosely received on said support portion ofsaid hanger bar, one on either side of said bore, a safety bar having acentral opening to slidably pass said support rod and be disposed in aposition above said hanger bar, said hanger bar having at each end anupwardly projecting spacer lug, said safety bar spanning the distancebetween the central portion of said hanger bar and said lugs andengaging the upper surfaces of said lugs, a nut for holding said spacerbar in firm engagement with said lugs, the height of said lugs beingsuch as to dispose said safety bar in spaced relation above said eyes sothat while said eyes are positively precluded from inadvertentdislodgement from said hanger bar, they freely hang thereon and thus mayadjust their positions as demanded by the movement of the pipe theysupport.